When you get that call or email offering a new job, your first instinct may be to say yes. You might want to reconsider and make sure all the details are in writing before you accept that offer.

The Muse advises that after you say yes based on just salary, it may be too late to discuss other matters:

That said, you'll also put yourself in a poor position to negotiate if you find out later that your job offer doesn't include, say, basic short-term disability insurance. (In case you're wondering, insurance is not generally something companies are willing to negotiate on, but if you're not offered it, you can use it as a point to ask for a higher base salary.) Saying yes and then going back and pretending like you're reconsidering unless they meet you in the middle is the equivalent of showing your hand in a poker game.

The Muse has some other tips on how to politely ask for this important tool for deciding whether to accept a job offer.